joining me now on the telephone, is u.s. coast guard petty officer ryan tippets who can help fill us in. so please explain what we know first off about any injuries that are involved with this explosion. >> okay sir. from the initial information we have there are four people being commercially medevacced by helicopter. i don't have any information on their exact injuries. >> and when were you first initially alerted to a situation or some type of explosion on that platform? >> our offices here were notified around 9:15 this morning. >> around 9:15. so it's almost 11:30 here on the east coast. for you guys about an hour and 15 minutes ago, correct? >> right. that is correct, sir. >> okay. when we talk about the location of this certainly what is going to come to mind for a lot of people is bp and the oil rig explosion that happened several summers ago. what do we know about the location of where this is in respect to that? >> okay. this is approximately 20 miles south of grand isle, louisiana. i don't have an exact location i